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Notable rivers, creeks, brooks and similar freshwater bodies.

Entity ["River" ,name] or

represents an entity of type "River" .

[prop]

gives the value of a specified property.

[{propi,…}]

gives the value of a list of properties.

EntityClass ["River" ,{propispeci,…}]

represents a class of entities with values of propi defined by speci.

Sample Entities

  • …

Properties

  • AlternateNames alternate names
    AverageDischarge average discharge
    Countries countries
    DrainageArea drainage area
    EasternmostPoint easternmost point
    EntityClasses entity classes
    EntityTypeList entity type list
    HighestPoint highest point
    Image image
    LeftBankTributaries left bank tributaries
    Length length
    LowestPoint lowest point
    MaximumDischarge maximum discharge
    MinimumDischarge minimum discharge
    Name name
    NorthernmostPoint northernmost point
    Outflow outflow
    OutflowLocation outflow location
    OutflowPosition outflow coordinates
    RightBankTributaries right bank tributaries
    SourceEntity source
    SourceLocation source location
    SourcePosition source coordinates
    SouthernmostPoint southernmost point
    WesternmostPoint westernmost point

Details

  • "River" entities include bodies of flowing water throughout the world.
  • Some properties are available for the "River" entity type as a whole and can be given using the form EntityValue ["River" ,property]. Such properties include:
  • "Properties" the list of available properties
    "PropertyCanonicalNames" the standard names of available properties
    "SampleEntities" a sample list of available entities (typically of length 10)
    "SampleEntityClasses" a sample list of available entity classes (typically of length 10)
    "EntityCount" number of entities available
    "Entities" the list of available entities
    "EntityCanonicalNames" the standard names of available entities
    "EntityClasses" the list of available entity classes
    "EntityClassCanonicalNames" the standard names of available entity classes
    "PropertyClasses" the list of available property classes
    "PropertyClassCanonicalNames" the standard names of available property classes
    "PropertyCount" number of properties available
  • The following annotations can be used in the third argument of EntityValue ["River" ,property,annotation]:
  • "Source" source information for the property
    "Date" the date associated with the entity-property value (if any)
    "EntityAssociation" an association of entities and entity-property values
    "PropertyAssociation" an association of properties and entity-property values
    "EntityPropertyAssociation" an association in which the specified entities are keys, and values are a nested association of properties and entity-property values
    "PropertyEntityAssociation" an association in which the specified properties are keys, and values are a nested association of entities and entity-property values
    "Dataset" a dataset in which the specified entities are keys, and values are an association of property names and entity-property values
  • The following annotations can be used in the second argument of EntityValue [property,annotation]:
  • "Qualifiers" the list of possible qualifiers for the property
    "QualifierValues" the list of possible values that can be given to each qualifier
    "DefaultQualifierValues" the list of default values for the property's qualifiers
    "Description" a brief textual description of the property
    "Definition" a detailed textual definition of the property
    "PhysicalQuantity" the physical quantity associated with the entity-property value
    "Unit" the unit associated with the entity-property value
  • A qualifier value of Automatic indicates that an applicable format of values can be used; e.g. for the "Date" qualifier, this includes a proper date or date span.

Examples

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Basic Examples  (4)

Use for entity discovery:

Find a property value for an entity:

Retrieve a dataset of all available properties for an entity:

Find rivers that have the largest drainage areas:

Scope  (3)

Retrieve multiple properties of a river:

Get quantitative properties of a river:

Retrieve data for the five rivers with the highest drainage area:

See Also

Entity Types: Island   Lake   Waterfall   Ocean   UnderseaFeature   Reef   Beach   Mountain   Volcano   Glacier   EarthImpact   Desert   Forest

Interpreter Types: River   ComputedRiver

Text Contents: River

History

Introduced in 2019 (12.0)

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